Exciting things may have happened sometimes to the stars we see in the sky today. For example, Betelgeuse, also known as Alpha-Ori, an M-type red supergiant...
Supernova 2014J at M82 - II. Direct analysis of a middle-class Type Ia supernova
We analyse a time series of optical spectra of SN 2014J from almost two weeks prior to maximum to nearly four months after maximum. We perform our analysis...
Until the advent in the late 1990’s of sensitive submillimetre arrays such as SCUBA, it was generally thought that the main sources for the interstellar dust...
Supernovae and Their Expanding Blast Waves during the Early Evolution of Galactic Globular Clusters
Our arguments deal with the early evolution of Galactic globular clusters and show why only a few of the supernovae (SNe) products were retained within globular...
Survey for the Binary Progenitor in SN1006 and Update on SN1572
We have completed a survey down to R = 15 mag of the stars within a circle of 4 arcmin radius around the nominal center of the remnant of SN 1006, one of the...
Testing supernovae Ia distance measurement methods with SN 2011fe
Aims: The nearby, bright, almost completely unreddened Type Ia supernova 2011fe in M101 provides a unique opportunity to test both the precision and the...
The black hole binary nova Scorpii 1994 (GRO J1655-40): an improved chemical analysis
Context: The chemical analysis of secondary stars of low mass X-ray binaries provides an opportunity to study the formation processes of compact objects, either...
The Canarias Database of Nearby Type II Supernovae
Our aim is to present an atlas containing 35 low-resolution spectra that correspond to 19 Type II supernovae. These spectra cover different phases of...
The Canarias Type IA Supernova Archive. II. A Standard Spectral Evolution Sequence
In a previous paper, we presented an atlas containing 59 low-resolution spectra that correspond to 27 Type Ia supernovae, covering about 1 year of Type Ia...